A Downhole Intelligent Control Integrated Injection Device

Abstract

The invention relates to the technical field of petroleum mining, and discloses a downhole intelligent control type integrated injection allocation device. The downhole intelligent control type integrated injection allocation device comprises an upper joint, a seal-allocation main body, a composite inner pipe and a lower joint which are sequentially connected. An integrated control cabin is arranged at the outer periphery of the upper joint. The lower portion of the integrated control cabin is in sealed connection with the outer periphery of the seal-allocation main body. A middle connecting sleeve is arranged at the outer periphery of the lower side of the seal-allocation main body. A liquid inlet valve is arranged between the composite inner pipe and the middle connecting sleeve. A middle sealing pipe is connected to the inner periphery of the lower side of the liquid inlet valve. An expansion packer is arranged on the lower side of the liquid inlet valve. Two metering and allocatingmechanisms are arranged in the annular peripheral wall of the seal-allocation main body in parallel and used for measuring and regulating formation water injection on the upper side and the lower side of the packer correspondingly. The interior of the integrated control cabin is used for arranging of batteries of the two mechanisms, monitoring elements and control elements. According to the downhole intelligent control type integrated injection allocation device, the function of two single intelligent water injection allocators and the function of the packer are integrated, and the two singleintelligent water injection allocators are integrally arranged at one end of the packer, so that synchronous injection allocation verification of layered water injection is achieved, the total lengthof a tool is decreased significantly, and the downhole intelligent control type integrated injection allocation device adapts to application of separate well injection in various well conditions.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to an underground water injection device with sub-layers. Background technique [0002] The stratified water injection, gas injection and other processes in oilfields are developing towards intelligence. Real-time monitoring of parameters such as formation pressure, stratified flow and temperature, and quantitative analysis are made to improve the oilfield's production level. The above monitoring data needs to be collected and uploaded to the ground in time. The current layered water injection tools mainly fall into the following two categories: The smart water distributor using the cableless method is an independent working unit underground. When multiple smart tools work at the same time, the test data cannot be shared, the test time is long and uncertain, the battery capacity is large and the life is uncertain; for example, the patent number is 200920083855.X's ...

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Problems solved by technology

[0003] The present invention aims at the problems existing in the layered water injection tools in the prior art, such as many cable connection points of downhole cabled intelligent tools, complex on-site operation, and inability to share data of multiple cableless intelligent tools, and provides a smart water distribution system for two monomers. The downhole intelligent control integrated dispensing device integrates the functions of the packer and the packer, and integrates two single intelligent water distributors at one end of the packer to realize synchronous injection verification of layered water injection and greatly shorten the tool life. Total length, suitable for injection wells with various well deviations

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